Human sexuality is the capacity to have erotic experiences and responses. A person's sexual orientation may influence their sexual interest and attraction for another person. Sexuality can have biological, physical, emotional, or spiritual aspects. The biological and physical aspects of sexuality largely concern the reproductive functions of the sexes (including the human sexual response cycle), and the basic biological drive that exists in all species. Physical, as well as emotional, aspects of sexuality also include the bond that exists between individuals, and is expressed through profound feelings or physical manifestations of emotions of love, trust, and caring. Spiritual aspects of sexuality concern an individual's spiritual connection with others. Sexuality additionally impacts and is impacted by cultural, political, legal, and philosophical aspects of life. It can refer to issues of morality, ethics and theology, or religion. (Full article...)
Human sexual activity, or human sexual practice or human sexual behavior, is the manner in which humans experience and express their sexuality. People engage in a variety of sexual acts from time to time, and for a wide variety of reasons. Sexual activity normally results in sexual arousal and physiological changes in the aroused person, some of which are pronounced while others are more subtle. Sexual activity may also include conduct and activities which are intended to arouse the sexual interest of another, such as strategies to find or attract partners (courtship and display behavior), and personal interactions between individuals, such as foreplay. Sexual activity may follow sexual arousal. (Full article...)
Sexually transmitted infections have been well known for hundreds of years, and venereology is the branch of medicine that studies these diseases. While in the past, these illnesses have mostly been referred to as STDs or VD, the term sexually transmitted infections (STIs) has been preferred by many up-to-date medical sources, as it has a broader range of meaning; a person may be infected, and may potentially infect others, without having a disease.